100001220311 has 4 divisors (see below), whose sum is σ = 100002072000. Its totient is φ = 100000368624.

The previous prime is 100001220269. The next prime is 100001220317. The reversal of 100001220311 is 113022100001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100001220311 - 2⁶ = 100001220247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001220292 and 100001220301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001220317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214886 + ... + 496163.

It is an arithmetic number, because the mean of its divisors is an integer number (25000518000).

Almost surely, 2^100001220311 is an apocalyptic number.

100001220311 is a deficient number, since it is larger than the sum of its proper divisors (851689).

100001220311 is an equidigital number, since it uses as much as digits as its factorization.

100001220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851688.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 100001220311 its reverse (113022100001), we get a palindrome (213023320312).

The spelling of 100001220311 in words is "one hundred billion, one million, two hundred twenty thousand, three hundred eleven".